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Readme.txt
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2003-03-05
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For more comments look in the source and the file UNRARDLL.TXT
which is included in the UnRar.dll-Distribution-File.
There's no special Form-File for Password- and Volumn-Dialogs. The
Dialogs are created dynamicly in the DFUnRar-Unit.
/****************
The unit untUnRar.pas contains the constants, records and
functions for using the unrar.dll
To Create english messages delete the comments for the
constants (and translate in better english)
****************/
untUnRar.pas
// Loads UnRar.dll - Dll must be in the standard-Dll-Paths
procedure LoadRarLibrary;
// Unloading UnRar.dll
procedure UnLoadRarLibrary;
// returns true, if dll is loaded, otherwise false
function IsRarLoaded: boolean;
/****************
The unit DFUnRar.pas contains a component for easy using the unrar.dll
Limitations:
- dont uses the extended Data-Structures and functions
****************/
/** Enumerations
// Used for property >Mode<
TDFRarMode = (DFRAR_EXTRACT, DFRAR_LIST);
// Uses for Status Messages in the event OnStatus
TRarStatus = (RAR_ONOPEN, RAR_ONBEFOREOPEN, RAR_ONEXTRACTFILE, RAR_AFTERCLOSE, RAR_ONPASSWORD);
// Override Options for overriding files
TOverrideOptions = (OR_ALWAYS, OR_NEVER, OR_EVENT);
/** Data Structures
TDFRARHeaderData = record
ArchiveName : string; // Archiv-Name
FileName : string; // FileName in Archiv with relativ Path
FlagContinueNextVol : boolean; // the rest of the File are in the next volumn
FlagContinuePrevVol : boolean; // the rest of the File are in the previous volumn
FlagNeedPassword : boolean; // you need a password to extract this file
IsDirectory : boolean; // this is a directory entry
DictionarySize : Integer; // size of the dictionary (not used here)
PackSize : cardinal; // packed filesize
UnpSize : cardinal; // unpacked filesize
HostOS : string; // Name of Host Operation System
FileCRC : string; // CRC-Code of File as 'F4F5F6F7'
FileTime : TDateTime; // FileTime
MajorVersionNeeded : Cardinal; // Major Version needed to extract a file (not used here !!)
MinorVersionNeeded : Cardinal; // Minor Version needed to extract a file (not used here !!)
Method : string; // Compress Method - see constants in untUnRar.pas - COMPRESSMETHODxxxxx
FAArchive : boolean; // FileAttribut Archiv is set
FACompressed : boolean; // FileAttribut compressed is set
FADirectory : boolean; // FileAttribut directory is set
FAHidden : boolean; // FileAttribut hidden is set
FANormal : boolean; // FileAttribut normal is set
FAOffLine : boolean; // FileAttribut Offline is set
FAReadOnly : boolean; // FileAttribut Readonly is set
FASystem : boolean; // FileAttribut System is set
FATempporary : boolean; // FileAttribut Temp is set
end;
/** Functions
// extract or list archive content
procedure Extract;
// returns false if any erros occours
function Test: boolean;
/** Properties
ArchivComment:
- Archiv-Comment
- read only
- y can also use OnComment-Event
CanProgress:
- use OnProgress Event
- additional UnRar to calculate filecount and size of all files - slower
CommentSize:
- size of Archive Comment
- read only
Directory:
- target directory for extracting
DllVersion:
- gets the Dll-Versionnumber
- y have to check this with the Major- and Minorversion of the archive
- I dont check this in this release of the component !!
FileList:
- if not empty then only the files are extract which are in this list
FileName:
- Archive-FileName
Mode:
- Open-Mode
- List: List only the content of the archive
- you can use the Event OnFileProcessing for Informations
OverrideEvent:
- if a file exists and you use the property: OR_EVENT this event fires
Password:
- password for archive
PromptForPass:
- use build in password-dialog
PromptForVolumn:
- use build in volumn-dialog
StopProcessing:
- set to true if you want to stop extracting/listing
/** Events
OnComment:
- fires on the Archive Comment
OnError:
- fires on Error - mostly the operation or not stopped
- use for stopping StopProcessing-Property
OnFileProcessing:
- use this to get Information for a file to extract/list
OnOverride:
- fires if a file already exists and y specify the OR_EVENT-Flag
OnPassword:
- fires if a pass is needed
OnProgress:
- fires if y set Property CanProgress
OnRarStatus:
- fires on all status events which are defined in the component
OnVolChange:
- fires if UnRar.dll cant find a volumn on a multi volumn-archive